Diagnostic Test

CHECK BATTERY SYSTEM VOLTAGE
1. Inspect and test the Battery with the Midtronics Battery Tester or equivalent for a shorted or dead cell.
  NOTE:
  This DTC can set if excessive high or low battery system voltage has occurred during programming.
  
  Did the Battery pass testing?
  
  Yes
  - Go To 2
  No
  - Replace the Battery in accordance with the Service Information. Refer to BATTERY, REMOVAL AND INSTALLATION .
  - With the scan tool, program the Secret Key information into the PCM using the MODULE PROGRAMMING procedure.
NO COMMUNICATION WITH BODY CONTROL MODULE (BCM)
1. With the scan tool, attempt to communicate with the BCM.
  Can the scan tool communicate with the BCM?
  
  Yes
  - Go To 3
  No
  - Refer to NO RESPONSE FROM ECU and perform the No Response from ECU diagnostic procedure.
PROGRAMMING SECRET KEY INTO THE PCM
1. Turn the ignition on.
2. With the scan tool, erase DTCs.
3. With the scan tool, program the Secret Key information into the PCM using the MODULE PROGRAMMING procedure. Refer to MODULE, POWERTRAIN CONTROL (PCM), MODULE PROGRAMMING .
4. Start the engine.
  NOTE:
  If the engine will not start, crank the engine for 15 seconds. Crank at least 2 times with the ignition switch returning to the off position each time.
5. With the scan tool, read DTCs.
  Does the DTC return?
  
  Yes
  - Replace and program the Powertrain Control Module in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL AND INSTALLATION .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - The Secret Key information has been successfully programmed into the PCM. Test is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .